fix overflow bug when attempting to access match results

2024-12-20 11:11:31 -08:00
parent 7af2aadcb8
commit 093e135925
4 changed files with 36 additions and 0 deletions
--- a/include/boost/regex/v5/match_results.hpp
+++ b/include/boost/regex/v5/match_results.hpp
@ -227,6 +227,10 @@ public:
   {
      if(m_is_singular && m_subs.empty())
         raise_logic_error();
+      
+      if (sub >= INT_MAX - 2 )
+         return m_null;
+
      sub += 2;
      if(sub < (int)m_subs.size() && (sub >= 0))
      {
--- a/include/boost/regex/v5/syntax_type.hpp
+++ b/include/boost/regex/v5/syntax_type.hpp
@ -19,6 +19,8 @@
 #ifndef BOOST_REGEX_SYNTAX_TYPE_HPP
 #define BOOST_REGEX_SYNTAX_TYPE_HPP

+#include <boost/regex/config.hpp>
+
 namespace boost{
 namespace regex_constants{